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#1
02-21-2006, 03:57 PM
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4runner broke timing belt - question
Ok so here's the story; engine was already warmed up 30 minutes+ etc. i turned it off to add some oil, start it up with no problems, put it in reverse and it died
 i knew what that meant; however, i tried it to crank it again couple of times, i know i shouldn't be doing this. I thought my igniter is gone since i was getting no spark and today i took timing belt cover off and bum timing belt's all loose, damn....So here's my question: timing belt broke around ~500/600rpm, engine cranks rather healthy with higher spin but no metallic sound, are my valves bend? what's good/bad scenario with v6 breaking timing belt? Any comments appreciated. 
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#2
02-21-2006, 10:02 PM
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Re: 4runner broke timing belt - question
anybody?
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#3
02-22-2006, 03:16 AM
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Re: 4runner broke timing belt - question
If you've got a stock 3V-ZE engine, you're in luck. The valves shouldn't be damaged. It's a free-running engine.
If you've got a 5VZ-FE, you are likely to need some expensive repairs, like a couple of bent valves and hopefully, no head or piston damage. They can be totalled. http://www.gates.com/downloads/downl...older=brochure
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#4
02-22-2006, 07:32 PM
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Re: 4runner broke timing belt - question
Quote:
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#5
02-22-2006, 10:14 PM
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Re: 4runner broke timing belt - question
No, I'm not saying the design is similar to vw. Only that it is not an interference engine.
You're welcome.
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#6
02-26-2006, 08:32 AM
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Re: 4runner broke timing belt - question
Brian R is correct,the 3VZE engine (used in about 40% of the 1988-95 4-Runners & pickups sold in Canada & USA) is a non-interference engine therefore only the timing belt is bad.These engines are notorious for timing belt idler bearings seizing up so THEY MUST BE REPLACED,see link below for the whole replacement process:
http://www.off-road.com/toyota/tech/v6tbelt/index.html Sidney® ™ Repairs tv's,vcr's,home/car audio out of my home E-mail:[email protected] Dartmouth,Nova Scotia Canada 1985 Toyota 4-Runner,solid front straight axle,factory cruise control,sunroof,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 247 000 KM http://groups.google.com/group/hfx.f...4c696fbf04837f http://www.iwaynet.net/~nesda/May02/May18.html http://www.iwaynet.net/~nesda/SonyAudMod.html http://www.newark.com/product-detail...ge/32-9495.jpg http://www.tipsmaster.ca/hottips-1.HTM http://www.tipsmaster.ca/1011-TV32C50-007.jpg http://www.iwaynet.net/~nesda/June03/June0315.html http://www.iwaynet.net/~nesda/Apr03/Apr033.html O |\ __O _|_| \ (\__/) (='.'=) (")_(") ..> ...> ...> ...> .(....\............../....).. ..\....\........... /..../.. ...\....\.._.._../..../.... ....\..../....l..`\_./.... ..../....l....l....(..`\.... ...l.....l.._.l.._.\....\... ...l.....l__.l__.l''\....\.. ...\...................\../.. .....\__________/..... () () ^ () () / \ ^ ^ () () / \ \ ^ / \ | | / \ \ \____________ o o ) | | /_________\___\__\__________|_____|
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#7
02-26-2006, 06:09 PM
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Re: 4runner broke timing belt - question
thanks for info, i think i will change head gasket as well, damn ... i never had done so much work just with one car/truck. 
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#8
02-26-2006, 06:44 PM
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Re: 4runner broke timing belt - question
Why change the head gasket? Don't fix it if it ain't broke...
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#9
02-26-2006, 08:38 PM
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Re: 4runner broke timing belt - question
yeah that's true ... but i just dont want to deal with that later on, they are known to be cheap and cause problems.
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#11
02-28-2006, 01:37 PM
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Re: 4runner broke timing belt - question
4Wheel said it. I believe they changed the head gasket design to help fix this problem, but the real problem was the head distortion. For this reason, they needed a better head gasket to seal the head to the block.
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#12
02-28-2006, 08:02 PM
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Re: 4runner broke timing belt - question
ok so now im getting lost, i've read that there was a recall for V6 3.0 head gasket in 4Runner FAQs section eg here unless we are talking about two different things
 So u guys are sayin that blowing head gaskets are caused by not heat-treated heads? Ok so what should i do?, I only bought this track to use it for winter and have my other car off the road. Damn .. this thing is one big F nightmare  she goes one more time and im gonna dump it in the river regardless of what i had done to it. 
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#13
02-28-2006, 08:51 PM
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Re: 4runner broke timing belt - question
Who said anything about heat treating? What kind of nightmare? Replacing a timing belt is to be expected. If you gave us some information about your truck, we could be more helpful. You actually haven't told us what year truck you have or what engine you have.
The head gasket is what gives and has to be replaced, but it is caused by other things. Toyota makes understanding easy for people by saying it is a head gasket problem. If they called it a head problem, they would have people wanting their heads replaced. Since Toyota is replacing head gaskets, they call it a head gasket problem. The real problem is having an aluminum head on a cast iron block. It has to be done right, and equipped with the right gasket and it wasn't. The truck is old enough that you will probably never have any problem with the head gasket. It is either solid or has already been replaced. Just don't let it run low on coolant and overheat.
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Forum Guidelines:http://www.automotiveforums.com/vbulletin/guidelines.html "What we've got here is a failure to communicate" Last edited by Brian R.; 02-28-2006 at 10:14 PM.
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#14
02-28-2006, 11:32 PM
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Re: 4runner broke timing belt - question
Quote:
Quote:
Generally, truck has 186XXX where does XXX doesn't line up with 186 (i've notice that recently)so the odometer could be rolled, the body was in really rough condition that was fixed recently(vietcong), 90 auto v6 that's all i know. That truck was one time deal, i had a choice to either drive lowered vehicle with going suspension issues during winter that turned out to be bad ass or buy whatever ... and now i got my truck back for about 6 weeks and timing went and im stuck again with lowered vehicle this time with full racing suspension and mild winter.... I dont even know if this thing is worth my time, forgot to mention noisy axle, leaky fuel tank, half rotten fuel inlet, steering free-play, random opening of tailgate window, front upper arms bushings gone and maybe some other suspension components too, and yeah .. engine mounts are probably shot as well. i think that would be it for now
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#15
02-28-2006, 11:47 PM
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Re: 4runner broke timing belt - question
Get the factory gaskets as they have been redesigned with the problem in mind. After market gaskets will be of a generic design with no consideration to this problem.
Repost with good solid progress and we can guide you where we can. But you are jumping around so much now you are spun up on headgaskets when you original post was for a bad idle/ingine dyeing.
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